I would add one should consider the intended usage of the vehicle when making this decision. Are you think it would be cool to drive cross country something like Power Tour where you will be fueling up at unknown facilities? Then being conservative with the compression ratio would be beneficial.
Years ago went to Hot August nights in an Iron headed 455 GTO that ran 12.00s with a 9.7 compression ratio. Car ran great on premium gas around town and at the track. Unfortunately we decide to take side trip to Lake Tahoe on the way home. We got fuel on the way out of Reno and half way to Tahoe we were along side the road dialing the timing back trying to stop the pinging and trying to decide if we should just turn around or try and continue on. We eventually limped into Lake Tahoe at 40 to 45 mph and got more gas which helped to dilute the bad gas we got earlier. But it was a painful trip up that mountain.
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If it breaks. I didn't want it in the first place.
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69 GTO \ 72 FIREBIRD \ 1/2 OF A 64 GTO \ 70 JAVELIN \ 52 FORD PU \ 51 GMC PU \ 29 FORD PU \ 85 ALFA ROMEO SPYDER \ A HANDFUL OF ODD DUCATI'S \ 88 S10 LT1 BLAZER & MY DAILY DRIVER 67 SUBURBAN.
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